共查询到20条相似文献，搜索用时 62 毫秒
1.
n-soliton-like solutions of three non-isospectral equations, the non-isospectral mKdV equation, the non-isospectral sine-Gordon equation and the non-isospeetral nonlinear Schroedinger equation were obtained by using the Hirota method. 相似文献
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毕金钵 《上海大学学报(英文版)》2004,8(3):286-288
AA modified version of the bilinear Baecklund transformation for the MKdV equation was given, with which some new solutions of the MKdV equation are obtained. The approach used here is general and can be applied to other soliton equations. 相似文献
3.
HUXiaohong ZHANGXingyou 《重庆大学学报(英文版)》2004,3(1):89-91
The existences of the global attractor A^ε for a degenerate parabolic equation and of the homogenized attractor A^0 forthe corresponding homogenized equation are studied, and explicit estimates for the distance between A^ε and A^0 are given. 相似文献
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张大军 《上海大学学报(英文版)》2004,8(1):4-7
N-soliton solutions in the Wronskian form for the KdV equation with loss and nonuniformity terms were obtained. New rational-like solutions and mixed solutions were further derived. All these solutions were verified by direct substitutions into bilinear equation. 相似文献
5.
In this paper, the Toda equation and the discrete nonlinear Schrdinger equation with a saturable nonlinearity via the discrete ＂ （G′/G＂）-expansion method are researched. As a result, with the aid of the symbolic computation, new hyperbolic function solution and trigonometric function solution with parameters of the Toda equation are obtained. At the same time, new envelop hyperbolic function solution and envelop trigonometric function solution with parameters of the discrete nonlinear Schro¨dinger equation with a saturable nonlinearity are obtained. This method can be applied to other nonlinear differential-difference equations in mathematical physics. 相似文献
6.
HUANGDe－bin LIUZeng－rong 《上海大学学报(英文版)》2001,5(4):273-275
In this paper,the nonlinear Schrodinger(NLS)equation was analytically solved.Firstly,the stationary solutions of NLS equation were explicitly given by the elliptic functions.Then a family of exact solutions of NLS equation were botained from these stationary solutions by a method for finding new exact solutions from the stationary solutions of integrable evolution equations. 相似文献
7.
张翼 《上海大学学报(英文版)》2004,8(2):132-133
Using bilinear transformation method,a new N-soliton solutions were obtained for the Sawada-Kotera equation. 相似文献
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利用辅助方程的方法，在计算机代数系统Maple软件的帮助下，找到了Sine—Gordon方程和KP方程(the Kadomtsev—Petviashvili equation)的新精确解。当然，这种方法也适用于求解其他一些非线性波动方程(组)。 相似文献
10.
The mixed AKNS nonlinear evolution equation in equation, which contains an isospectral term the AKNS system. So searching for its exact and a nonisospectral term, is an important solutions is vital both for the AKNS system and in mathematical sense. In this paper, the corresponding Lax pair was given, the bilinear forms of the mixed AKNS equation were obtained through introducing the transformation of dependent variables. By using Hirota＇s bilinear method, the N-soliton solutions were obtained. 相似文献
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胡劲松 《绵阳师范学院学报》2008,27(11)
对一阶常微分方程中的齐次方程的推广形式——齐次型方程进行了研究,并将齐次方程的“变量变换”法求解过程推广应用到齐次型方程,从而证明了齐次型方程是可积方程,得到了一阶微分方程的几种新的可积类型,其中也包括部分黎卡提方程和贝努利方程。 相似文献
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二阶微分方程在微分方程中有重要地位,同时在生物数学建模中起重要的作用,方程的解直接影响着模型的稳定性,通过变量代换法给出三类二阶微分方程的解法. 相似文献
15.
丁玉敏 《蒙自师范高等专科学校学报》1999,1(4):26-29
函数是数学的核心,也是《数学分析》研究的主要对象．本文通过实例说明函数的性质、图象在解超越方程、不定方程和无理方程中的特殊功用． 相似文献
16.
给出一阶Lagrange微分方程通解的两种求法,探讨了Lagrange方程和Clairaut方程的关系,并举例说明Lagrange方程在具体问题和数学建模中的应用. 相似文献
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直接利用Euler方程和拟Euler方程的形式解,求Riccati方程的特解,或通过对Riccati方程进行初等变换,再利用Euler方程和拟Euler方程的形式解,求Riccati方程的特解. 相似文献
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唐建国 《湖南科技学院学报》2006,27(5):4-6
本文研究了二次不定方程3f^2＋3fg＋g^2=h^2给出了其所有正整数解公式.对于特例g=1和g=2利用Pell方程v2-3u2=1及不定方程3u^2-v^2=2的正整数解公式分别得到了原方程成为二元不定方程时的所有正整数解. 相似文献
19.
根据这个广义Boussineq方程的特点,利用辅助方程法构造了一个非线性高次常微分辅助方程,再通过映射的方法,由辅助方程的解获得了广义Boussineq方程的各种精确解的解析表达式. 相似文献
20.
对Riccati方程进行函数变换,使之成为缺少一次项的特殊的Riccati方程,之后用已经成熟的理论进行进一步求解。 相似文献